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Attaching the ball neck
& WARNING Risk of accident and injury due
to incorrectly installed ball neck
If the ball neck is not properly mounted and
secured, it may come loose along with the
trailer while the vehicle is in motion and
endanger other road users. There is a risk of
fatal injuries.
Mount and secure the ball neck as
#
described in the installation instructions
of the ball neck manufacturer.
With the ball neck mounted, always
#
make sure it is properly secured before
commencing a journey.
Attaching the ball neck
Secure the vehicle against rolling away.
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Remove cover cap
1
from the ball neck
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mount in the direction of the arrow.
Store cover cap
1
such that it cannot move
#
around.
Comply with the installation instructions of the
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ball neck manufacturer.
Observe the notes on loading the vehicle.
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To ensure that the Trailer Maneuvering Assist
functions properly, the taught-in values for the
ball head position must be reset after each
change of trailer, ball neck, or ball head posi-
Driving and parking 305
tion. A calibration drive must then be per-
formed again. Information on resetting and
the calibration drive (
page 307).
/
Coupling up/uncoupling a trailer
& WARNING Risk of injury due to a change
in vehicle level
Vehicles with AIRMATIC: the vehicle level may
be changed unintentionally, e.g. by other per-
sons. If you couple or uncouple the trailer dur-
ing this time, you may become trapped. In
addition, other people could become trapped
if their limbs are between the vehicle body and
the tires or underneath the vehicle.
Observe the following when coupling or
uncoupling:
Do not open or close any doors or the
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tailgate.
Do not initiate the level control system
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and do not operate DYNAMIC SELECT.
Do not lock or unlock the vehicle.
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